Ok. Here are the steps. This assumes you have been operating the new phone for a time.
1) Back Up New Phone.
- Plug in new phone to Computer
- Open iTunes
- Select device (phone icons at top left of iTunes, closest to center)
- Select Summary from the left sidebar
- Got to Backups section and select Back Up Now under Manually Back Up and Restore (right side)
- Wait for Back Up to complete by monitoring activity at top of iTunes
- Latest back up should now read Today at very recent time
2) Back Up Old Phone
- Same steps as above but with old phone
- Disconnect old Phone from USB Cable when back up is complete (do not plug in New phone the usb cable yet)
3) Know your wifi SSID (Broadcast name) and password before proceeding.
4) Reset New iPhone - This will cause data loss, but apps can be downloaded again and mail should be safe on the server unless you told server to delete email after it is downloaded (POP 3)
- General > Reset > Reset All Settings
- Read and understand the warning message then it Reset (or ok or yes, I don't remember the exact item to agree)
- Wait for New Phone to reset. You will get a hello message.
5) Restore old Phone Data to New Phone
- Plug in usb / lightning cable to New Phone
- You should get a Setup iPhone message, Choose restore from iTunes Backup
- Select the backup of old phone you just made. It should be the last back up and be named after Old Phone with a very recent date and time
- Wait for restore to complete. You can monitor activity in iTunes header.
- Phone will reboot and iTunes may say it cannot communicate with New iPhone. This is not a problem. Wait for new phone to start again.
Your old phone data should now be on your New Phone. You may want to update the iOS to the latest version now. Back up New Phone again before updating iOS